Debris bin

A debris bin, comprising:

• a box body, having an inner cavity;
• a debris suction opening, defined on the box body and communicating with the inner cavity of the box body;
• and
• a debris outlet opening, defined on the box body and communicating with the inner cavity of the box body;
• wherein the inner cavity is provided with a supporting surface for supporting debris, wherein the supporting surface is inclined downward from a top edge to a bottom edge when the debris bin is oriented with the supporting surface at a bottom of the debris bin, and the debris outlet opening is located immediately adjacent to at least a portion of the bottom edge of the supporting surface;
• wherein the box body is further provided with an air suction opening, wherein the air suction opening and the debris outlet opening are located on and pass through the same side wall of the box body, which is arranged opposite to and spaced from a side wall having the debris suction opening therein;
• wherein an included angle in the range of 76°-80° is formed between a first plane passing through the top edge and the bottom edge of the supporting surface and a second plane that is coplanar with the portion of the side wall which is provided with the debris suction opening where the side wall intersects the top edge of the supporting surface, and
• wherein a filter is provided on a same side of the debris bin as the debris outlet opening, the air suction opening larger than the debris outlet opening and positioned above the debris outlet opening when the debris bin is oriented with the supporting surface at a bottom of the debris bin, and the filter is position within the air suction opening and is also above the debris outlet opening.